Power-Nuclear/Alternative — Flue Gas
ARC S7 Coating
Case Study 060
Flue Gas Chimney Lining
Challenge
Solution
Results
Issue
Severe corrosion of the Corten B steel
chimney liner would require liner replacement
if left unaddressed.
Preparation
■■ Decontaminate surfaces
Client Reported
Inspections at 5 years and 10 years show the
ARC S7 lining in excellent condition. Goal
Eliminate corrosion in stack liner and avoid
possible replacement costs.
Application
1. Stripe coat of ARC S7 applied to all weld
seams by brush
2. Apply two coats of ARC S7 by heated airless
plural component spray with a total dft of
40 mils (1 mm)
Root Cause
Flue gasses enter the chimney at 130°C
(266°F). As it cools going up stack, it drops
below dew point and acids condense on walls
leading to extreme corrosion rate.
The flue gas chimney at wood and peat burning
power plant
■■
Grit blasted to near white metal with a 3 mil
(75 µm) profile
Severe corrosion in chimney due to condensing acid gases
Technical data reflects results of laboratory tests and is intended to indicate general characteristics only.
A.W. Chesterton Company disclaims all warranties expressed or implied, including warranties of merchantability and fitness for a particular purpose. Liability,
if any, is limited to product replacement only. Any images contained herein are for general illustrative or aesthetic purposes only and are not intended to convey
any instructional, safety, handling or usage information or advice respecting any product or equipment. Please refer to relevant Safety Data Sheets, Product Data
Sheets, and/or Product Labels for safe use, storage, handling, and disposal of products, or consult with your local Chesterton sales representative.
■
■
Further corrosion has been halted
Achieved cost avoidance of stack liner
replacement
ARC S7 lining still in excellent condition after 10 years
of service
A.W. Chesterton Company
EN23593.59
860 Salem Street, Groveland, MA 01834 USA
© A.W. Chesterton Company, 2014. All rights reserved.
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in USA and other countries, unless otherwise noted. WWW.ARC-EPC.COM
®
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